/*
 * Copyright 2004 - 2013 Wayne Grant
 *           2013 - 2024 Kai Kramer
 *
 * This file is part of KeyStore Explorer.
 *
 * KeyStore Explorer is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * KeyStore Explorer is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with KeyStore Explorer.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.kse.utilities.history;

import java.security.GeneralSecurityException;
import java.security.KeyStore;
import java.util.ResourceBundle;

import org.kse.crypto.CryptoException;
import org.kse.gui.passwordmanager.Password;

/**
 * Special version of KeyStoreState for KeyStores that cannot be copied (like PKCS#11).
 */
public class AlwaysIdenticalKeyStoreState extends KeyStoreState {

    /**
     * Resource bundle
     */
    protected static ResourceBundle res = ResourceBundle.getBundle("org/kse/utilities/history/resources");

    /**
     * Create an empty state.
     */
    AlwaysIdenticalKeyStoreState() {
        super();
    }

    /**
     * Create a new state.
     *
     * @param history  History
     * @param keyStore KeyStore
     * @param password KeyStore password
     */
    AlwaysIdenticalKeyStoreState(KeyStoreHistory history, KeyStore keyStore, Password password) {
        super(history, keyStore, password);
    }

    @Override
    public boolean isSavedState() {
        return true;
    }

    @Override
    public void setAsSavedState() {
        // do nothing
    }

    @Override
    public void append(KeyStoreState keyStoreState) {
        // do nothing
    }

    @Override
    public void setPreviousStateAsCurrentState() throws CryptoException {
        // do nothing
    }

    @Override
    public void setNextStateAsCurrentState() throws CryptoException {
        // do nothing
    }

    @Override
    public KeyStoreState previousState() {
        return this;
    }

    @Override
    public KeyStoreState nextState() {
        return null;
    }

    @Override
    public KeyStoreState createBasisForNextState(HistoryAction action) throws CryptoException {
        return this;
    }

    @Override
    protected void propagateNewPasswords(KeyStoreState targetState) throws CryptoException {
        // do nothing
    }

    @Override
    protected boolean isEntryPrivateKeyEqual(KeyStoreState targetState, String alias, Password password)
            throws GeneralSecurityException {
        return true;
    }
}
